df[['B','C']]
 
#         B          C
# ---------  ---------
# -0.425327  -1.927737
# -0.241526  -0.044510
#  0.039161  -0.500049
#  0.912686  -0.611460
# -1.839950   0.453875
#  0.573736  -0.309663
#  0.051883  -0.403075
#  1.919987   0.514212
# -0.632182   1.274552
#  0.374212   0.232229
# 
# [100 rows x 2 columns]